<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <script>
      var gongzi = parseInt(prompt("请输入您的税前工资数目"));
      var gongjijin = gongzi * 0.1 * 2;
      alert("您的税前工资是：" + gongzi + "，您的住房公积金是：" + gongjijin);
    </script>
  </head>
  <body></body>
</html>
